Security restrictions bypass in Siemens products
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-12736 |
| CWE-ID | CWE-284 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
RUGGEDCOM ROS Server applications / SCADA systems Scalance X Switches Firmware Client/Desktop applications / Other client software |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Security restrictions bypass
EUVDB-ID: #VU8670
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-12736
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a adjacent attacker to bypass security restrictions on the target system.
The weakness exists due to improper access controls in the RCDP implementation that is used by Siemens Ruggedcom ROS-based devices and Siemens Scalance X switch models. An adjacent attacker on the same collision or broadcast domain as the target system can bypass security restrictions, gain unauthorized access and perform administrative actions.
Update RUGGEDCOM ROS to version 4.3.4 or 5.0.1.
Update Scalance X Switches Firmware to version 3.0 or 6.1.
RUGGEDCOM ROS: 4.3.0 - 5.0.0
Scalance X Switches Firmware: 2.0 - 6.0
External linkshttp://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-856721.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
